thanks for joining us. >> from all of us here, thanks. we'll see you at 9:00 and 11:00. this is the "jeopardy!" teachers tournament. here are today's contestants -- she teaches at a maryland green school that has a solar roo an. from baltimore, maryland, please welcome... he studied premef n prelaw, but discovered his passion was teaching. from suwanee, georgia, say hello to... and all the students at her school go on a camping trip to get to know each other. from rancho santa margarita, california, say hi to... and now here is the host of "jeopardy!" -- alex trebek! alex: thank you, johnny. welcome, ladies and gentlemen. two semifinalists waiting in the wings. we have three more to be determined and four wild-card spots, ell. robin, chris, and marion, good to have you with us. pick up the signaling devices. here comes the jeopardy! round for you. and now take a look at the categories, starting off with... each correct response will begin with "t-e-n." we'll deal with the... ...and, finally... the culture of vietnam -- a land forged by war and rebellion, emerging today a